8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



are described, but then in a geographic arrangement. List of species 

 will also be given with the sections. 



Locality 5b = 54s. 



Locality ig: T. 12 S., R. 42 E., ridge north of North Fork of Mill Creek, 

 Preston quadrangle, Idaho. (Coll. G. R. Mansfield, July 17, 18, 1912.) 



Locality igx: North wall of Laketown Canyon, about 2.\ miles southwest of 

 Laketown, Randolph quadrangle, Utah. (Coll. P. V. Roundy, September 12, 

 1912.) 



Locality 20x1 Near top of gulch, about 2 miles north of Brigham, Wasatch 

 Mountains, Utah. (Coll. C. E. Resser, A. A. L. Matthews, E. R. Pohl, Sep- 

 tember 12, 1926.) 



Locality 32P = 55c 



Locality 54s: North side Two Mile Canyon, near its mouth, 2 miles south- 

 east of Malad, Wasatch Mountains, Idaho. (Coll. F. B. Meek; C. D. Walcott, 

 1898; C. D. Walcott and L. D. Burling, 1906.) 



Locality 55c: North of first small canyon south of Wasatch Canyon, 3A miles 

 north of Brigham, Wasatch Mountains, Utah. (Coll. F. B. Meek; C. D. Walcott 

 and L. D. Burling, 1906.) 



Locality 55P: About 7 miles above mouth, of Blacksmith Fork, Bear River 

 Range, Utah. (Coll. C. D. Walcott and L. D. Burling, August 27, 1906.) 



Locality 55(7: Same as preceding. 



Locality $gc: Mill Canyon, about 5 miles southwest of Liberty and 15 miles 

 west of Montpelier, Bear River Range, Idaho. (Coll. C. D. Walcott, Sep- 

 tember 1907.) 



Locality sgc: Same as preceding. 



Locality $gf : Same as preceding. 



Localities 322 and 322a: These numbers were assigned to small lots of fossils 

 from the eastern side of the Bear River Range, secured prior to 1906. 



STRATIGRAPHY 



Publication of Walcott's original field notes seems warranted even 

 though they are nearly 35 years old. Comments on the rock entombing 

 the fossils, and such miscellaneous data as seem pertinent are also 

 recorded in geographic arrangement. The fossil lists are placed in the 

 descriptions of the sections where they occur. Where a section is not 

 given lists appear with the miscellaneous notes. Where more than the 

 Ptarmigania fauna is represented in a collection, the list is confined 

 to the species regarded as representative of that fauna. 



In nearly every case only slight modifications of Walcott's assign- 

 ment of beds to formations are necessary. It was his intention to 

 publish stratigraphic papers embodying these notes, but the necessary 

 paleontologic studies could not be completed in his lifetime. In 

 anticipation of publication he added comments to transcriptions of 

 the field notes, particularly with respect to formational names and 



